Improvement in lubricators



J. TENWICK.

Lubricator.

Patented Jany 31, 1871.

amount of lubrication.

that sale paw amine.

JOIIN TENWIOK, OF GRANTHAM; ASSIGNOR TO ROBERT CHARLES RAN- SOME, OFIPSWICH, ENGLAND.

Letters Patent No. 111,401, dated January 31, 1871.

IMPROVEMENT IN LUBRICATORS.

The Schedule referred to in these Letters Patent and making part ofthesamer To all to whom it may concern.-

Be it known that I, J om: TENWI K, of Grantham, in the county ofLincoln, molder, a subject of the .Queen ofiGreat Britain, have inventedor discoveredarrangement for supplying cranks with, oil. It is' ap-.plicable especially to reaping and lllOWlllgflililClllIlBS, but may beused also in other machinery where cranks are employed.

In the crank-plate, which is made of a circular form, and acts as afly-wheel, Ifor'm a hollow or cavity, and such hollow or cavityI use asa receptacle for the oil.

The crank-plate or fly-wheel may either be cast in one piece with thehollow or cavity in it, or it may be cast or'manuiactured in partssuitably fitted together. I p

The crank-pin is inserted into a. socket in the crank-plate, and throughthe socket I make one or more holes for the oil to pass through from thereceptacle to the crank-pin. I

In the crank-pin, where. it fits in the socket, I

make a hole to convey the oil to the interior of the pin, which ishollow, and another hole-which conveys the-oil to the plaee'where theconnecting-rod works; 5 Into the hollowin the crank-pin I fit aregulatingplng. The regulating-plug is made with a groove in it tocommunicate withthe'holes in the crank-pin. The regulating-plug fillsthe hollow in the crank-pin, so that the groove in the plug is the onlypassagehy which the oil can escape to the exterior of the crankpin tolubricate itand the connecting-rod working thereon, and the 'size of thegroove regulates the I secure the regulator-plug to thecrank-piujwithiaevashcr and pin or screw, or in other convenient means.

In the rim or outside edge of the crank-plate is. a hole'to suppIy theoil, and, in' order to stop the lastmentioued hole, I use a plug orpiece of cork or other suitable material. I

;If desired, a second lubricating cavity may be provided in the crankplate to lubricate the crank-axis in a similar manner, the axis having apassage in it commimicating both with the cavity and with the bearing ofthe crank-shaft, and being provided with a regnand by the lating-plug,as already described in respect to the crank-pin. I

My invention can be more readily understood by referring to the drawingwhich accompanies thisspecification, but I wish it to be understood thatI donot bind myself to the exact shapes and dimensions shown therein, asthese can be altered without departing from my invent-ion.

Figure l is a side-view of the crank-plate and lubricating-cavity withthe cover-plate removed; Figure 2 is a vertical section, and Figure 3 ahorizontal-section of the same.

- a is the lubricating-cavity;

l) is the hollow crank-pin, secured by a nut, b; and b b are holescommunicating with the interior hol-' y I o is the groovedregulating-plug fittedinto the hollow in the crank-pin;

(Z isthe feed-hole and stopper for the supply of oil c is thecrank-shalt;

f is a collar on the crank-pin forsecnring the connecting-rod; and

g, a pin by which the collar f and plug 0 are held in their places.-

Figure 4 is a back View of a double-disklubricator for lubricating thecrank-shaft as well as the crankpin;

Figure 5 is a section, and

Figure 6 is a part of a similar view, with the crankshaft also insection.

l is the oil-cavity for lubricating the bearing;

0' c are oil-passages in the shaft; and

t is a regulating-plug fitted into a hollow in the shaft. i

Having. now described and vention, and the means for carrying the same"i'u'to efi'ect, p

I would have it understood that I claim- 1. The combination of thecrank-plate,constructed with a lubricating-cavity,and the hollowcrank-pin, so arranged that the lubrieating material may pass from saidcavity to the journal of the cra'nkpin, substantially as before setforth.

2. The'combination of the said crank-plate,thehollow crank-pin, and thecrank-shaft,-so that both the crank-pin journal and vvthe journal of thecrank-shaft may be lubricated by lubricating material supplied from thecrank-plate, substantially as before set forth.

J OHN TENWIGK Witnesses:

SPENCER WALLHEAD, J oruv 'HAsLAM.

explained my said in-

